Explain protoderm in primary growth in shoot, Biology

Assignment Help:

Explain Protoderm in primary growth in shoot?

The protoderm is one of the so-called "primary tissues" because it is formed first during germination and subsequent bud growth and development. The protoderm produces new cells on the surface of the apical meristem, and these surface cells migrate downward and mature into the epidermis of the shoot and leaves.

The epidermal layer provides physical protection for the other internal tissues, and most importantly, guards against drying out. The epidermis produces an outer waxy coating from a substance known as cutin. This cuticle layer prevents evaporative water loss. However, leaves need carbon dioxide and they need to get rid of oxygen, so they provide openings for this gas exchange through special cells called guard cells. Two guard cells make up a functional unit, whose scientific name is stomata, or stomate.


Related Discussions:- Explain protoderm in primary growth in shoot

Define types of indicators, Define Types of Indicators? Macro indicator...

Define Types of Indicators? Macro indicators are used at strategic levels while micro indicators are used at performance levels. From the previous sections it is clear that man

Explain noncompetitive inhibitor, Explain noncompetitive inhibitor A no...

Explain noncompetitive inhibitor A noncompetitive inhibitor can combine with either the free enzyme or the enzyme- substrate  complex, interfering  both.  The  most  common  ty

Mitochondria be considered the power plants of the cell, Q. Why can mitocho...

Q. Why can mitochondria be considered the power plants of the aerobic cells? Mitochondria are the "power plants" of aerobic cells because within them the final stages of the ce

Explain principle of fehling''s soxhlet method, Explain Principle of Fehlin...

Explain Principle of Fehling's Soxhlet method (Lane-Eynon method)? Reducing sugars are those which have free sugar groups and hence may be estimated directly by titrating the s

The cell, how does autophagy help in converting a tadpole larva into an adu...

how does autophagy help in converting a tadpole larva into an adult amphibian

Blood formation, why are blood formed at bones or joints

why are blood formed at bones or joints

What are changes in st-segment, Q. What are changes in ST-Segment? Nor...

Q. What are changes in ST-Segment? Normal Exercise Electrocardiogram ST and J Point As the heart rate increases with exercise, a number of predictable changes occur in a

The genotype of a plant showing the dominant phenotype, The genotype of a p...

The genotype of a plant showing the dominant phenotype can be determined by : 1. Test cross 2. Dihybrid cross   3. Pedigree analysis 4. Back cross It is determined

Aril - seed appendages, Aril - Seed Appendages It is an outgrowth that...

Aril - Seed Appendages It is an outgrowth that arises from the funicle or the testa near the raphe and covers the seed partially or completely. It is often referred to as the

Polyphyletic theory, Please I need short notes on polyphylrtic theory

Please I need short notes on polyphylrtic theory

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd